论文标题
较低维度的牛顿重力的紧凑型源和宇宙学范围
Compact sources and cosmological horizons in lower dimensional bootstrapped Newtonian gravity
论文作者
论文摘要
我们研究了一个局部源在一个和两个空间维度上产生的自举牛顿电位，并表明这两种情况自然会导致外部真空的有限空间扩展。我们推测这意味着与紧凑源相关的宇宙学（粒子）范围的必要存在。鉴于在超高的能量过程中发生的尺寸降低 - 例如普兰克能量的散射，紧凑型物体的重力崩溃或黑洞蒸发的终点 - 人们可以考虑将这种较低维度的“气泡”浸入我们的宇宙中，以描述（通常是Planckian size size sible）与这些动力学相关的（通常是Planckian size size）。
We study the bootstrapped Newtonian potential generated by a localised source in one and two spatial dimensions, and show that both cases naturally lead to finite spatial extensions of the outer vacuum. We speculate that this implies the necessary existence of a cosmological (particle) horizon associated with compact sources. In view of the possible dimensional reduction occurring in ultra-high energy processes - like scatterings at Planckian energies, the gravitational collapse of compact objects or the end-point of black hole evaporation - one can consider such lower-dimensional "bubbles" immersed in our Universe as describing (typically Planckian size) baby universes relevant to those dynamics.
